SlugOS init files: fixed network boot code for dsmg600 and added delay to ifup

(fix dhcp timeout before link negotiation complete) for network boot.  Added
kexec boot script (no turnup support yet, manual only).

2 files changed, 164 insertions, 0 deletions

diff --git a/packages/slugos-init/files/boot/kexec b/packages/slugos-init/files/boot/kexec
new file mode 100644
index 0000000000..c5b428cd07
--- /dev/null
+++ b/packages/slugos-init/files/boot/kexec
@@ -0,0 +1,159 @@
+#!/bin/sh
+#
+# Loads the specified kernel and kexecs it.
+# 
+# The access method and path from which to fetch the kernel
+# is specified in "$1" and "$2":
+#
+# flash      /boot/zImage-ixp4xxbe
+# nfs        spike:/home/slug/vmlinuz
+# wget       http://devserv/kernels/vmlinuzbe
+# wget       ftp://ftpserv/pub/zImage
+# /dev/sda1  /kernels/zImage-test
+# UUID       /kernels/zImage-test
+#
+# Command-line options for the new kernel are in "$3".
+
+# Use the standard init path (see /etc/init.d/rcS)
+export PATH=/sbin:/bin:/usr/sbin:/usr/bin
+
+# Wait at least a short while for the disks...
+if [ ! "$sleep" -gt 0 ] ; then
+    sleep=1
+fi
+
+# Load the helper functions
+. /etc/default/functions
+. /etc/default/modulefunctions
+
+leds boot system
+
+if [ -n "$1" -a -n "$2" ] ; then
+
+	method="$1"
+	shift
+	kpath="$1"
+	shift
+	if [ -n "$1" ] ; then
+	    kcmdline="$1"
+	    shift
+	fi
+	kexec_image=
+	need_umount=0
+	do_kexec=0
+
+	mount -t proc proc /proc
+
+	case "$method" in
+
+	    flash )
+		echo "Loading kexec kernel directly from \"$kpath\"..."
+		kexec_image="$kpath"
+		;;
+
+	    wget )
+		if /boot/network ; then
+		    echo "mounting tmpfs partition..."
+		    if mount -t tmpfs tmpfs /mnt ; then
+			need_umount=1
+			echo "Loading kexec kernel using wget \"$kpath\"..."
+			wget -P /mnt "$kpath"
+			t=`basename "$kpath"`
+			kexec_image="/mnt/$t"
+		    fi
+		fi
+		;;
+
+	    nfs )
+		if /boot/network ; then
+		    echo "Loading kexec kernel using nfs \"$kpath\"..."
+		    echo "mounting nfs partition..."
+		    if mount -o ro,nolock -t nfs `dirname "$kpath"` /mnt ; then
+			need_umount=1
+			t=`basename "$kpath"`
+			kexec_image="/mnt/$t"
+		    fi
+		fi
+		;;
+
+	    /dev/* )
+		echo "Loading kexec kernel using disk \"$kpath\"..."
+		loaddiskmods
+		sleep "$sleep"
+		echo "mounting partition \"$method\"..."
+		if mount -o ro "$method" /mnt ; then
+		    need_umount=1
+		    kexec_image="/mnt/$kpath"
+		fi
+		;;
+
+	    UUID )
+		echo "Loading kexec kernel using disk UUID \"$kpath\"..."
+		loaddiskmods
+		sleep "$sleep"
+		if [ -n "$UUID" ] ; then
+		echo "mounting partition UUID \"$UUID\"..."
+		    if mount -o ro -U "$UUID" /mnt ; then
+			need_umount=1
+			kexec_image="/mnt/$kpath"
+		    fi
+		fi
+		;;
+
+	    * )
+		echo "Unrecognized method: \"$method\""
+		;;
+
+	esac
+
+	if [ -n "$kexec_image" -a -f "$kexec_image" ] ; then
+	    if kexec -l "$kexec_image" ; then
+		do_kexec=1
+	    fi
+	else
+	    echo "Unable to load \"$kexec_image\""
+	fi
+
+	if [ $do_kexec -eq 1 -a -n "$kcmdline" ] ; then
+	    echo "Attempting to mount /sys (sysfs)..."
+	    if mount -t sysfs sysfs /sys ; then
+		echo "Setting command line:"
+		echo " \"$kcmdline\""
+		echo "$kcmdline" > /sys/kernel/kexec_cmdline
+		echo "unmounting /sys..."
+		umount /sys
+	    else
+		do_kexec=0
+	    fi
+	fi
+
+	if [ $need_umount -eq 1 ] ; then
+	    echo "unmounting /mnt..."
+	    umount /mnt
+	fi
+
+	if [ $do_kexec -eq 1 ] ; then
+	    echo "Remounting root as read-only..."
+	    mount -o remount,ro /
+	    echo "Invoking \"kexec -f -e\" ..."
+	    kexec -f -e
+	    echo "ERROR!"
+	    # We should never return here!  At this point, things are not
+	    # too well.  Remount the root as rw, and fallback.
+	    echo "Remounting root as read-write..."
+	    mount -o remount,rw /
+	fi
+else
+	echo "Usage: $0 flash|nfs|wget|UUID|/dev/<partition> <path-or-URL> [cmdline]"
+fi
+
+# fallback - use the flash boot
+echo "Falling back to flash boot..."
+leds beep -f 1000 -r 2
+exec /boot/flash
+
+# fallback to the fallback
+leds boot system panic
+exec <>/dev/console >&0 2>&0
+test -x /bin/sh && exec /bin/sh
+exit 1
\ No newline at end of file
diff --git a/packages/slugos-init/files/boot/network b/packages/slugos-init/files/boot/network
index 599250e744..9aa295e43d 100644
--- a/packages/slugos-init/files/boot/network
+++ b/packages/slugos-init/files/boot/network
@@ -8,6 +8,11 @@
 # function!
 . /etc/default/functions
 #
+# We may need to load the network driver modules here
+. /etc/default/modulefunctions
+loadnetmods
+#
+#
 # Now all the information for booting should be in the configuration
 # file.  Config the loopback and network interfaces.
 ifconfig lo 127.0.0.1 up